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Oil spraying and air supplementing structure of oil spraying screw rod vacuum pump

A screw vacuum pump and atmospheric technology, which is applied to parts, pumps, and pump components of pumping devices for elastic fluids, can solve problems such as large vibration and unit noise, and achieve the effect of reducing noise, vibration, and noise

Active Publication Date: 2015-09-30
无锡锡压压缩机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides an oil injection and air supply structure of an oil injection screw vacuum pump, which can solve the problems of the existing oil injection screw vacuum pump with high noise and large vibration of the unit

Method used

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  • Oil spraying and air supplementing structure of oil spraying screw rod vacuum pump
  • Oil spraying and air supplementing structure of oil spraying screw rod vacuum pump

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Embodiment Construction

[0010] See figure 2 , the fuel injection air supply structure of the fuel injection screw vacuum pump of the present invention has an orifice 2 on the main casing 1 of the fuel injection screw vacuum pump, and the main machine cavity 3 of the fuel injection screw vacuum pump communicates with the external atmosphere through the throttle hole 2 ; The diameter of the orifice 2 is φ2mm~φ8mm. When the vacuum degree of the air inside the host increases, that is, when the air pressure inside the host is lower than the external atmosphere, the external atmosphere will automatically enter the cavity of the host through the orifice 2 under the action of the pressure difference, thereby avoiding high vacuum inside the machine; and When the internal pressure of the machine cavity continues to decrease, the pressure difference between the inside and outside of the body will increase the flow rate of the gas entering the body, so the orifice can not only ensure that there will be no high ...

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Abstract

The invention provides an oil spraying and air supplementing structure of an oil spraying screw rod vacuum pump, and can solve the problems of high unit noise and large vibration of a traditional oil spraying screw rod vacuum pump under high vacuum degree. A throttle hole is formed in a main engine casing of the oil spraying screw rod vacuum pump; and a main engine cavity of the oil spraying screw rod vacuum pump is communicated with external atmosphere through the throttle hole.

Description

technical field [0001] The invention relates to the structural field of an oil-injected screw vacuum pump, in particular to an oil-injected air-supplementing structure of an oil-injected screw vacuum pump. Background technique [0002] Usually, except for the inlet and outlet flanges, the cavity 3 of the main engine of the oil-injected screw vacuum pump is completely isolated from the external atmosphere, see figure 1 , During the operation of the oil-injected screw vacuum pump, the noise and vibration of the main engine of the vacuum pump will increase significantly when the intake vacuum is high. Therefore, if the time of high vacuum inside the main engine can be reduced or even avoided, the noise and vibration of the unit can be effectively reduced. Contents of the invention [0003] In view of the above problems, the present invention provides an oil-injection air supply structure of an oil-injection screw vacuum pump, which can solve the problems of the existing oil-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02F04C29/00F04C29/06F04C29/02
Inventor 吴芳蒋丽洁杨国健吴霞俊胡建军朱峰
Owner 无锡锡压压缩机有限公司